Selvedge - Selvedge

Japanese: カンザシゴカイ - かんざしごかい
Selvedge - Selvedge
A general term for annelids belonging to the family Serpulidae of the class Polychaeta. This name comes from the fact that a shell cap on the gill crest on the head resembles a hairpin. Currently, about 60 species from 27 genera are known in Japan. Serpulids secrete calcareous matter to create tubes in which they live their entire lives. The body is divided into the gill crest, thorax, and abdomen. Larger ones can reach a body length of 7 to 8 cm, but most are around 3 cm. The gill crest has several to several dozen pairs of gill filaments arranged in a semicircular or spiral shape, one of which becomes a special shell stalk with a shell cap at its tip.

Source: Heibonsha World Encyclopedia, 2nd Edition Information

Japanese:
多毛綱カンザシゴカイ科Serpulidaeに属する環形動物の総称。頭部の鰓冠(さいかん)にある1個の殻ぶたをかんざし(簪)にみたててこの名がある。日本には現在27属60種ほどが知られている。 カンザシゴカイ類は石灰質を分泌して管をつくり,その中で終生生活する。体は鰓冠部,胸部,腹部に分かれる。体長は大きいもので7~8cmになるが,大部分は3cm前後。鰓冠部には数対~数十対の鰓糸が半円状やらせん状に並び,そのうちの1本が特別な殻柄(かくへい)になり,先端に殻ぶたをつける。

出典 株式会社平凡社世界大百科事典 第2版について 情報

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